Machine for making lath-boards.



PATENTED JUNE 25, 1907.

H. R. KARSTENS.

MACHINE FOR MAKING LATH BOARDS.

APPLICATION FILED JULY12,1906.

rHE NcRRts Pars:

HERMAN R. ILARSTENS, OF LADYSMITH, WISCONSIN.

MACHINE FOR MAKING LAT-H-BOARDS.

Specification of Letters Patent.

Patented June 25, 1907.

Application filed July 12,1906. Serial No. 325,822.

T0 at whom it may concern:

Be it known that I, HERMAN R. KARs'rENs, a citizen of the United States,residing'at Ladysmith, in the county of Rusk and State of Wisconsin,have invented certain new and useful Improvements in Machines for MakingLath-Boards; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same. Myinvention relates to the novel construction of a machine formanufacturing what are known as lath boards, that is boards providedwith relatively staggered rows of longitudinal slots, the object beingto provide a machine whereby such boards are produced at relativelysmall cost and in any desired lengths, and consists in the features ofconstruction and combinations of parts hereinafter fully described andclaimed. In the accompanying drawings illustrating my invention: Figure1 is a view in elevation of a portion of a lath board constructed inaccordance with my invention. Fig. 2 is a transverse section of the sameon the line 2 2 of Fig. 1. Fig. 3 is a side elevation of a machineconstructed in accordance with my invention, the supporting frame beingomitted. Fig. 4 is a top plan view of the same. My said inventionconsists of a frame A provided adjacent its ends with two sets ofbearings B in which two pairs of opposing rollers C are journaled andbetween which the board D to be cut is adapted to pass, one of the saidrollers of each set being driven, and being to this end geared to asource of power in any suitable manner, as for example, by means of thepulleys E. Pivotally mounted on said frame A, practically midway betweenthe ends thereof, is an oscillating frame consisting of two side bars Fconnected together by means of a cross bar G. The said side bars areprovided between their ends on opposite sides with projections H inwhich are journals I for shafts J on which rotary saws K and L,respectively, are rigidly mounted. The saidsaws K and L are disposed inrelatively staggered relation on said shafts J and the latter are drivenby a single belt trained over the pulleys M rigid therewith and over anidler N having its access of rotation coincident with the access'ofoscillation of saidframe F-G andby means of which said saws are gearedto a source of power. Disposed upon the free end of one of saidprojections H of said frame F-G is a projection O which is connected bymeans of a pitman P with the crank Q of one of said driven rollers C,the latter serving during its rotation to impart oscillatoryinotion tothe said frame F- G.

In operation the board to be slotted, which is illustrated in Figs. 1and 2, ispassed between said rollers C and into the path of the saidsaws K and L. WVhile said bo'ardis passing through the machine the saidsaws are alternately brought into and out of operative relations to theboard respectively by the oscillation of the frame FG .thus producing orcutting longitudinal slots R in said board D, said slots being disposedin staggeredrelation to each other as previously stated. The length ofsaid slots, their distance apart, and the Width thereof are obviouslydependent upon the duration of the oscillating movements of the saws,their relative position and thickness, and these may be arranged asdesired by the manufacturer.

My said machine is very simple and efficient, and the lath boardproduced is very advantageous byreason of the fact that the openings forthe reception of plaster are of the pre-determined width and notdependent upon the eye of the lather, and furthermore for the reasonthat a large surface can be covered at a single operation, thus enablingthe lather to cover a greater surface in a given space of time than bythe use of the laths now employ ed.

v I claim as my invention 1. In a machine of the class described, asupporting frame, feeding rollers arranged in pairs spaced apart andmounted for rotation upon said supporting frame, above and below thepath of the material thereon means for rotating said feeding rollers, aframe mounted above the table and pivoted thereto at its lowerend,andconstitutingasupportingframe and carrying shafts spaced apart andextending transversely of the supporting frame, saws carried by saidshafts with the saws of one shaft arranged intermediate of those uponthe other shaft, means for simultaneously rotating said saw shafts, andmeans whereby the rotary motion of said rollers is caused to oscillatesaid swinging frame.

2. In a machine of the class described, a supporting frame, meanscarried by said supporting frame for feeding the material thereover, aframe formed of spaced side members pivoted at their lower ends to saidsupporting frame and connected by a transverse member and spaced fromsaid supporting frame and with arms extending laterally from said sidemembers, shafts spaced apart and journaled respectively in said arms,saws carried by said shafts with the saws of one shaft arrangedintermediate of those upon the other shaft, means for simultaneouslyrotating said shafts, and means for intermittently vibrating saidpivoted saw carrying frame.

3. A machine of the class described, a supporting frame, feed rollersarranged in pairs and spaced apart and mounted for rotation upon saidsupporting frame above and below the path of the material movingthereover,

and with a relatively long crank arm upon the journal of one of saidrollers, a frame formed of a transverse member and spaced side memberspivoted at one end to said sup porting frame and extending above thesame, and With arms extending laterally from said side members, shaftsspaced apart and journaled respectively in said arms, saws carried bysaid shafts with the saws of one shaft arranged intermediate to those ofthe other shaft, a relatively short crank arm upon one of said shafts,and a connecting rod between said crank arms.

In testimony whereof I have signed my name in presence of twosubscribing witnesses.

HERMAN R. KARSTENS.

Witnesses THEO. M. TnoMAs, M. SINCLAIR.

